1. Product Specifications & Properties

Alloy X (UNS N06002) is a nickel-chromium-iron-molybdenum superalloy with balanced chemistry providing outstanding high-temperature strength and oxidation resistance. It retains excellent ductility and structural integrity even after prolonged exposure up to 16,000 hours at 650-870°C (1200-1600°F).

Chemical Composition (%, range)

Physical & Mechanical Properties

2. Operating Conditions & Selection Guidelines

• Ideal Media: Excellent resistance to oxidizing, reducing, and neutral atmospheres up to 1177°C (2150°F). Good resistance to stress-corrosion cracking in petrochemical environments. Suitable for applications involving combustion products and flue gases

• Critical Advantage: Maintains strength and ductility after extreme long-term thermal exposure. Tested to 8,700 hours at 1177°C (2150°F) and 16,000 hours at 650-870°C (1200-1600°F) without embrittlement

• Temperature Range: Continuous service up to 1177°C (2150°F) for many applications. Optimal performance in the 650-870°C (1200-1600°F) range

• Common Applications: Aerospace combustion cans, transition ducts, flame holders, afterburners; industrial furnace rolls, radiant tubes; chemical processing retorts, catalyst supports, pyrolysis tubing, flash dryer parts

3. Fabrication & Material Comparison

• Heat Treatment: Supplied in solution-annealed condition. Standard annealing at 1177°C (2150°F) followed by rapid cooling. Hydrogen atmosphere used for bright-annealed finishes. Lower annealing temperatures may precipitate secondary phases

• Hot Working: Forge and hot form after uniform heating to 1177°C (2150°F). Good workability in appropriate temperature ranges

• Cold Working: Exhibits good ductility for cold-forming operations. Intermediate annealing may be required for severe deformation

• Welding Compatibility: Excellent weldability using GTAW/TIG, GMAW/MIG, SMAW/stick, and resistance welding methods. Welded components should be annealed and rapidly cooled to restore properties

• Versus 316L Stainless: Significantly higher high-temperature strength and oxidation resistance. Maintains properties where 316L would rapidly oxidize or lose strength

• Versus Inconel 625: Similar high-temperature capabilities. X offers better oxidation resistance at extreme temperatures; 625 provides higher strength at intermediate temperatures

• Versus Hastelloy X Other Grades: The industry standard for high-temperature furnace and gas turbine components with proven long-term performance

4. Product Availability

Contact ZYTC Alloy for application engineering support or to request a quotation. Our technical team can assist with material selection for high-temperature applications. ISO 9001 and AS9120 certified supplier.